Feeding apparatus for concrete-mixing machines.



J. L. WETTLAUFER. FEEDING APPARATUS FOR CONCRETE MIXING MACHINES.

APPLICATION FILED MAY 19, 1910. 4

1,030,361 Patented June 25,1912.

COLUMBIA PLANDGRAPH (10.,WASNINOTON. D. c.

JOHN LEWIS WETTLAUFER, OF TORONTO, ONTARIO, CANADA.

FEEDING APPARATUS FOR CONCRETE-MIXING MACHINES.

Specification of Letters Patent.

Patented June 25, 1912.

Application filed May 19, 1910. Serial No. 562,148.

To all whom it may concern:

Be it known that I, JOHN Lnw'rs Wn'r'r- LAUFER, of the city of Toronto, in the county of York, in the Province of Ontario, Canada, have invented certain new and useful Improvements in Feeding Apparatus for Concrete-Mixing Machines, of which the following is the specification.

My invention relates to improvements in feeding apparatus for concrete mixing ma-.

feed the mixing machine.

Another object is to devise such an apparatus as may be readily adapted to mixing machines of diiferent types.

Another object is to make the apparatus simple and compact.

To effect these objects my invention consists of a lift hopper supported on runways and a frame secured to the truck of the mixing machine, and a suitable elevating apparatus therefor, the parts being arranged and constructed in detail as herein after explained.

Figure 1, is a side elevation of my improved feeding apparatus. Fig. 2, is aside elevation of the truck showing the feeding apparatus in end elevation.

In the drawings like letters of reference indicate corresponding parts in each figure.

A is the truck and B is a mixing drum suitably supported on the truck.

O is the feeding chute, which extends into the open end B of the feeding drum.

D D are standards secured at one side of the truck A at desired distances apart-op posite the end of the feeding drum and maintained rigid in the upright position by bracing rods D. The uprights are made of angle iron and are connected together at the front near the top by a cross angle iron D D is a cross shaft journaled in suitable bearings at the top of the standard D and carrying agrooved wheel D E is the main driving shaft of the mixer, which is journaled in suitable bearings E and is designed to rotate the mixer in a manner, which it is not necessary to describe. The shaft E is provided with a gear wheel E which meshes with the gear wheel E on the counter shaft E. A clutch E is also located on the counter shaft, the moving member of such clutch being operated by a forked lever E E is the winding drum, which remains stationary or turns according as to whether the clutch is thrown in or out. The clutch is of the usual form or type and need not here be described.

F is a diagonally set cross bar secured at the back of the bars D and carrying the grooved wheels G and G'.

H H are struts, which are pivotally connected at one end to bearings H at the top of the truck at one side. The opposite ends of the struts H H. normally rest on the ground.

I I are suplemental struts, which are pivotally connected to the standards D D. The struts I rest normally on grooved rollers I journaled in pins I in the struts H H. The inner ends of the struts I extend upwardly to a point on a level with the bottom of the chute C.

J is the hopper, which is of a scoop-shape being open at the inner end and closed at the outer end. The hopper J is supported on grooved rollers J at the inner end, which ride on the struts I.

K are toggel-jointed bars pivot-ally connectedto the front or lower end of the hopper when in the normal position at one end and to the strut H at the opposite end.

L is a grooved wheel, which is held to rotate on the cross shaft L having bent ends L secured to the sides of the hopper J.

M is the winding rope, which is connected 'to the cross bar D at the top of the standards D D and passes around the wheel F and up over the wheel D down around the guiding wheels G and G thence around the where the power is applied and reducing the leverage, so that When the hopper is being raised up it will be raised up most advantageously and in raising the hopper and parts connected thereto will assume the position shown in dotted lines in Fig. 1, with the mouth of the hopper above the feeding chute. Of course when the hopper is being raised to this position the weight is being gradually lightened as the material is being dumped into the chute C and mixing drum. \Vhen the hopper is in the lowermost position an ordinary wheel barrow can be wheeled up to it and dumped into it and thus the erection of supplemental scafiolding now frequently employed in connection with mixing machines to produce means for feeding the drum is entirely dispensed with.

By the construction, which I have adopted, I am enabled to raise, the load from the ground with the expenditure of a minimum amount of power.

hat I claim as my invention is 1. In a mixing machine or the like carried on a suitable support, a feeding apparatus comprising standards suitably supported, struts supported near the bottom of the standard, a feeding hopper supported on the struts, a cross shaft secured at the front end of the hopper and wheel on the cross shaft, a cross bar extending between the standards, a rope connected to the cross bar and extending around the pulley on the cross shaft of the hopper, a grooved wheel suitably journaled at the top of the standards and over which the rope extends, and guiding pulleys located behind the standards, a winding drum and clutch located on a shaftjournaled in suitable bearings and around which winding druin the rope extends as and for the purpose specified.

2. In a mixing machine or the like carried on a suitable support, feeding chute and truck, the combination with the standards and a lower strut pivoted at the top in proximity to the standards, grooved wheels journaled on pins in the lower strut, upper struts pivotally connected to the standards and resting on the grooved wheels, of a hopper having grooved wheels resting on the upper strut, means for supporting the hopper at the front and means connected to the front of the hopper and extending over the top of the standard for simulta neously moving the hopper longitudinally on thestruts and raising it as and for the purpose specified.

3. In a mixing machine or the like carried 011 a suitable support, feeding chute and truck, the combination with the standards and a lower strut pivoted at the top in pr0ximity to the standards, grooved Wheels journaled on pins in the lower strut, upper struts pivotally connected to the standards and resting on the grooved wheels, of a hopper having grooved wheels resting on the upper strut, toggle ointed bars pivotally connected to the front of the hopper and to the lowermost struts, and means connected to the front of the hopper and extending over the top of the standard for simultaneously moving the hopper longitudinally on the struts and raising it as and for the purpose specified.

4. In a mixing machine or the like carried on a suitable support, feeding chute and truck, the'coinbination with the standards and a lower strut pivoted at the top in proximity to the standards, grooved wheels journaled on pins in the lower strut, upper struts pivotally connected to the standards and resting on the grooved wheels, of a hopper having grooved wheels resting on the upper strut, toggle ointed bars pivotally connected to the front of the hopper and to the lowermost struts, a rope connected to the top of the standard and passing over suitable guiding wheels on the hopper and on the top of the standard for simultaneously moving the hopper, longitudinally toward the feeling opening and raising it as and for the purpose specified.

5. A feeding apparatus for mixing machines comprising struts designed to form run ways extending from the ground to the feeding opening, a hopper supported on the run ways, toggle-jointed bars connecting the hopper t0 the struts and means for raising the hopper as and for the purpose specified.

6. In a feeding apparatus of the class de scribed, a hopper and struts forming runways therefor and means for raising the struts and hopper simultaneously during the period that the hopper is passing along the run ways as and for the purpose specified.

JOHN LEWIS IVETTLAUFER.

\Vitnesses:

B. BOYD, H. PRESTON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

